With the source code listed on GitHub, ONLYOFFICE service can be deployed on your own server providing you with a full control over your data.

Complete

Work online from any browser and OS with cloud-based solution. Use desktop office apps for Windows, Linux and Mac OS to edit docs offline. The mobile applications for Android and iOS are also available.

Watch this presentation to see the difference between both office software solutions:

Take a look at this article for an in-depth comparison of features available in Google Docs and ONLYOFFICE